Tuesday, February 18, 2014

Lab Exercise : Audacity

Splicing and Editing

Download the files from ------->  https://www.dropbox.com/s/ufluc5ge5u0re0j/lab%20audacity.zip
You will find a zip file called “splicing and editing.zip”. Download this and uncompress it to your hard drive.

Open up the file in Audacity and listen to the two audio tracks.
Track 1 says: “I can edit digital audio”
Track 2 says: “Watch me splice and normalise”

Your task is to edit the content of these clips to create a single clip that says: “I can splice digital audio.” 
You will need to trim the region to locate the required segments ready for splicing.
You should first ensure that the audio has consistent amplitude between the two clips before joining them so that the two clips appear seamless at the end.

Bleeping unwanted speech 

This task will give you more practice at selecting and editing specific sections of digital audio in Audacity and introduces sound synthesis as a new technique.

The task

Take a look at the following text. On Blackboard, you will find an audio file with this text spoken through a speech synthesiser called:

bleeping exercise (before).wav

“Audio and Music Production is a cracking good course at Liverpool John Moores University. You can learn about all kinds of tools and equipment that will transform you into an employable graduate in the future.
The lecturers are helpful and the facilities are great. I can honestly say this course is fantastic and recommend this course to any person looking for an interesting degree.”
Your task is to bleep out the highlighted sections using the Generate Tone feature in Audacity. We will synthesise a bleep using a sine wave at a frequency of 1 kHz.

You can download and listen to the complete (bleeped) version on Blackboard – the file is called:
bleeping exercise (after).wav”